I usually do all my own maintenance and repair work. Here is a good one for you. I once took my work truck to an oil change place since I was low on oil at the time and knew it was long over do. Well, they wanted to show me something and this is where it gets good. They bring me to the back of my truck and tell me my rear differential fluid needs to be changed. I asked why is that, he said because it is thin and runny, well no shit it is hot. I could not beleive that they told me that line of BS. I wonder how many people they have sold that line to ?